Method and device for realizing sight line distance measurement and luminance automatic control on laptop

Abstract

The invention relates to a method and a device for realizing sight line distance measurement and luminance automatic control on a laptop. The method is characterized by comprising the following steps: providing a detection signal processing unit connected with a central processing unit (CPU) of the laptop; providing a distance-measurement sensing module, wherein the module collects the distance information of a user and the laptop; when the distance is less than a guarding distance set by the user, controlling a loudspeaker of the laptop by the CPU, and reminding the user in a menu display mode; providing a photoelectric sensing module, wherein the module collects the luminance information of the environment; comparing the luminance information with a luminance value set by the user; automatically controlling a backlight driving circuit of the laptop by the CPU; and controlling the luminance of a display screen. According to the method and the device, a sound is given out to remind and warn the user when the user is too close to the computer to use the computer. Meanwhile, automatic detection can be carried out with the method according to the environment variation to enter an optimal mode luminance range so as to roundly protect the eyesight of the human body. The device has the advantages of simple structure and better practical value.

Description

technical field [0001] The invention relates to the technical field of notebook computers, in particular to a method and a device for realizing line-of-sight distance measurement and automatic brightness control on a notebook computer. Background technique [0002] Notebook computers are widely used at present, and their popularity is very high. The age group of users has spanned from teenagers to seniors. And the trend of teenage users is very high, and they spend a lot of time staring at the screen a day. If the user is too close to the screen, long-term use will cause eye fatigue and even myopia. In addition, when the screen of the notebook computer is too bright or the background is too dark due to changes in the ambient brightness, it will also seriously affect the user's vision and health. Contents of the invention [0003] In view of this, the present invention provides a method and device for realizing line-of-sight distance measurement and automatic brightness ...

AI Technical Summary

Problems solved by technology

If the user is too close to the screen, long-term use will cause eye fatigue and even myopia

In addition, when the screen of the notebook computer is too bright or the background is too dark due to changes in the ambient brightness, it will also seriously affect the user's vision and physical health.

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